US3697344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for locating a bit of material in a pile fabric
Assignee: DURCAM RESEARCH AND DEV Co Ltd
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Filing: 1970-12-08
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Granted: 1972-10-10
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Expires: 1990-12-08
Abstract
Abstract This invention relates to a method of and apparatus for delivering yarn bits or tufts to a backing sheet for producing a pile fabric. More particularly, a bit of material is delivered pneumatically to the backing sheet and the delivery air is separated from the bit prior to its location on the backing sheet to allow the bit to continue under its own inertia to its position on the backing sheet.
Inventors
- 👤 Stephen Temple
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:28
CPC Classifications
D; D04; D04H; D04H11/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T428/00; Y10T428/23907; Y10T428/23986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |